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 A117326 Indices of semiprimes in A117322 prime(n) modulo semiprime(n). 0
 13, 17, 18, 20, 21, 27, 28, 30, 32, 41, 42, 43, 46, 47, 49, 53, 55, 56, 58, 59, 63, 69, 72, 75, 81 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1) = 13 because A117322(13) = prime(13) modulo semiprime(13) = 41 mod 35 = 6 = 2 * 3 is semiprime. a(2) = 17 because A117322(17) = 59 mod 49 = 10 = 2 * 5 is semiprime. a(3) = 18 because A117322(18) = 61 mod 51 = 10 = 2 * 5 is semiprime. a(4) = 20 because A117322(20) = 71 mod 57 = 14 = 2 * 7 is semiprime. CROSSREFS Sequence in context: A066918 A164062 A338371 * A052055 A272119 A075761 Adjacent sequences: A117323 A117324 A117325 * A117327 A117328 A117329 KEYWORD easy,nonn AUTHOR Jonathan Vos Post, Mar 08 2006 STATUS approved

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Last modified February 2 16:46 EST 2023. Contains 360023 sequences. (Running on oeis4.)